diff --git a/src/Model/Group.php b/src/Model/Group.php
index da77335f12..fa41d26467 100644
--- a/src/Model/Group.php
+++ b/src/Model/Group.php
@@ -358,14 +358,18 @@ class Group
 			throw new HTTPException\NotFoundException('Group not found.');
 		}
 
+		$contactIds = [];
+
 		foreach ($contacts as $cid) {
 			$cdata = Contact::getPublicAndUserContactID($cid, $group['uid']);
 			if (empty($cdata['user'])) {
 				throw new HTTPException\NotFoundException('Invalid contact.');
 			}
 
-			DBA::delete('group_member', ['gid' => $gid, 'contact-id' => $cdata['user']]);
+			$contactIds[] = $cdata['user'];
 		}
+
+		DBA::delete('group_member', ['gid' => $gid, 'contact-id' => $contactIds]);
 	}
 
 	/**
diff --git a/src/Module/Api/Mastodon/Lists/Accounts.php b/src/Module/Api/Mastodon/Lists/Accounts.php
index 8d27207fc4..413cacae29 100644
--- a/src/Module/Api/Mastodon/Lists/Accounts.php
+++ b/src/Module/Api/Mastodon/Lists/Accounts.php
@@ -45,6 +45,7 @@ class Accounts extends BaseApi
 		if (empty($request['account_ids']) || empty($this->parameters['id'])) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
+
 		return Group::removeMembers($this->parameters['id'], $request['account_ids']);
 	}
 
@@ -59,6 +60,7 @@ class Accounts extends BaseApi
 		if (empty($request['account_ids']) || empty($this->parameters['id'])) {
 			DI::mstdnError()->UnprocessableEntity();
 		}
+
 		return Group::addMembers($this->parameters['id'], $request['account_ids']);
 	}